Signal recording apparatus and method

• US 4,777,537 A
• Filed: 10/10/1986
• Issued: 10/11/1988
• Est. Priority Date: 10/21/1985
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sasaki, Takayuki, Ueno, Katsuhiko, Iijima, Koji, Arai, Masaaki
• Primary Examiner(s): MCELHENY JR, DONALD E
• Application Number:
  US06/918,514
• Time in Patent Office: 732 Days
• Field of Search: 358/343, 358/341, 358/342, 358/907, 360/19.1, 360/32, 369/32, 369/59, 369/111, 369/50, 369/48, 369/49
• US Class Current: 386/239
• CPC Class Codes: G11B 20/00007 Time or data compression or expansion audio compression based on psychoacoustics G10L19/00; data processing for reproducing audio data at different playback speeds G10L21/04; video compression H04N19/00; data compression per se H03M7/30
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/107 of operating tapes
• CPC Class Codes: G11B 27/28 by using information signals recorded by the same method as the main recording G11B27/22 takes precedence
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: H04N 1/32117 in a separate transmission or protocol signal prior to or subsequent to the image data transmission, e.g. in digital identification signal [DIS], in non standard setup [NSS] or in non standard field [NSF] for mode signalling H04N1/333
• CPC Class Codes: H04N 2201/3264 of sound signals
• CPC Class Codes: H04N 9/802 involving processing of the sound signal H04N9/806, H04N9/835 take precedence

Abstract

Described is a method and a recording apparatus whereby audio and video signals can be recorded on a plurality of recording tracks on the same recording medium. A series of temporarily consecutive audio signals can be recorded across a plurality of tracks. On at least the audio track, information signals including the leading track number, the next following track number and the number of the video track bearing the corresponding video signals, are recorded. The track number data of the information signals on these audio tracks are written in corresponding positions of a digital, table memory. These control code data are recorded on a predetermined control track on the recording medium such that a series of desired audio signals and the corresponding video signals can be selectively reproduced smoothly and promptly by first reading the control track and then reproducing the audio and video tracks in accordance with the control code data information.

Claims

1. An improved signal recording apparatus of the type in which a plurality of fields of video signals are sequentially recorded on a corresponding plurality of concentrically arranged tracks on a rotary recording medium, and selected ones of the remaining tracks on the recording medium are arranged to have audio signal segments recorded thereon, some of which are intended to be reproduced sequentially, wherein the improvements in the recording apparatus comprise:

(a) means for time-compressing the audio signal segments;

(b) means for generating control code data for controlling a reproduction sequence of audio signal segments recorded in said plurality of recording tracks;

said control code data including address data indicating a track number and address on said rotary recording medium, data for discriminating whether a track being reproduced is one of the tracks having an audio signal segment which is intended to be reproduced in a sequence with other recorded audio signal segments, and data indicating a track number of a video signal segment corresponding to the audio signal segment being reproduced;

(c) table memory means for storing said control code data including said address data, said discriminating data and said track number data;

(d) means for recording said control code data in predetermined portions of said respective audio tracks together with said time compressed audio data; and

(e) means for recording said control code data stored in said table memory means on a control track at a predetermined location on said rotary recording medium.

2. A signal recording apparatus according to claim 1, wherein the means for recording said control code data reads out said control code data stored in said table memory means and records it on said control code track when the recording of said time-compressed audio signal segment and said video signal segment for a given scene corresponding thereto is completed.

3. A signal recording apparatus according to claim 1, wherein the means for recording said control code data reads out said control code data stored in said table memory means and records it on said control code track when the recording of said time-compressed audio signal segment and said video signal segment for a given series of scenes corresponding thereto is completed.

4. A signal recording apparatus according to claim 2 in which said control code data stored in said table memory means is read out and recorded on said control code track before said rotary recording medium is removed from said recording apparatus.

5. A signal recording apparatus according to claim 1, in which said means for time compressing said audio signal segments includes audio signal memory means, means for inputting audio data in digital form into said audio signal memory means, a write/read address counter for controlling said audio signal memory means;

first and second clock signal generators for respectively generating first and second clock signals and supplying them to said write/read address counter, said first clock signal corresponding to a selected clock frequency and having a frequency substantially less than said second clock frequency, whereby said write/read address counter generates write addresses at said first frequency and read addresses at said second frequency whereby said digital audio signal segments are written into said audio signal memory means at said first clock signal frequency and are read out of said audio signal memory at the higher, second clock signal frequency.

6. Apparatus according to claim 5, in which said second clock signal generator produces said second clock signal at a frequency 640 times that of said first clock signal.

7. In combination with a rotary recording medium on which a plurality of fields of video signals are sequentially recorded on a corresponding plurality of concentrically arranged tracks on said rotary recording medium, and selected ones of the remaining tracks on the recording medium are arranged to have time compressed audio signal segments and control code data signals recorded thereon, said control code data signals including address data indicating a track number and address on said rotary recording medium and data for discriminating whether a track being reproduced is an audio track or a video track, a signal reproducing apparatus of the type which reproduces signals from said rotary recording medium, the reproducing apparatus comprising:

(a) decoder means for initially reproducing said control code data signals from the remaining tracks upon the beginning of reproduction;

(b) table memory means for storing control code data from said decoder means, said control code data including said address data, said discriminating data and said track number data;

(c) display means for displaying the control code data stored in said table memory means;

(d) means for selectively thereafter reading said video data and said time compressed audio data from said rotary recording medium in accordance with the display control code data; and

(e) means for time-expanding the time compressed audio signal segments read from said rotary recording medium.

8. In a method of sequentially recording a plurality of fields of video signals on a plurality of concentrically arranged tracks on a rotary recording medium and audio signal segments, some of which are intended to be reproduced in sequence, on selected ones of the remaining tracks on the recording medium, the improvement comprising the steps of:

(a) time-compressing the audio signal segments before recording them;

(b) generating control code data for controlling a reproduction sequence of audio signal segments recorded in said plurality of recording tracks;

said control code data including address data indicating a track number and address on said rotary recording medium, data for discriminating whether a track being reproduced is one of the tracks having a sequential audio signal segment, and data indicating a track number of a video signal segment corresponding to the audio signal segment being reproduced;

(c) storing said control code data including said address data, said discriminating data and said track number data;

(d) recording said control code data in predetermined portions of said respective audio tracks together with said time compressed audio data; and

(e) recording said stored control code data on a control track on said rotary recording medium.

9. A method of signal recording according to claim 8, wherein the step of recording said control code data includes the steps of reading out said stored control code data and recording it on said control track when the recording of said time-compressed audio signal segment and said video signal segment for a given scene corresponding thereto is completed.

10. A method of signal recording according to claim 8, comprising the further steps of reading out said stored control code data and recording it on said control track before said rotary recording medium is removed from said recording apparatus.

11. A method of signal recording according to claim 8, wherein the step of time compressing said audio signal segments includes the further steps of generating first and second clock signals, said first clock signal corresponding to a selected clock frequency and having a frequency substantially less than said second clock frequency, and writing said audio signal segments into a digital memory at said first clock frequency and reading out said audio signal segments from the digital memory at said second clock frequency.

12. A method of signal recording as recited in claim 11, wherein said second clock signal has a frequency 640 times that of said first clock signal.

13. A signal reproducing method for use with a rotary recording medium on which a plurality of fields of video signals are sequentially recorded on a plurality of concentrically arranged tracks on said rotary recording medium, and selected ones of the remaining tracks on the recording medium are arranged to have time compressed audio signal segments and control code data signals recorded thereon, said control code data signals including address data indicating the track numbers of related audio and video tracks on said rotary recording medium and data for discriminating whether a track being reproduced is an audio track or a video track, the signal reproducing method comprising the steps of:

(a) initially reproducing said control code data from the remaining tracks;

(b) storing said reproduced control code data, said control code data including said address data, said discriminating data and said track number data;

(c) displaying the stored control code data and selectively controlling a reproduction sequence of said audio and video signals recorded in said plurality of recording tracks in accordance with the displayed control code data; and

(d) time-expanding the reproduced, time compressed audio signal segments.